Monitoring of Ground Deformation due to Excessive Withdrawal of Natural Gas Using SBAS

Figure 5

Mean velocity estimate using the SBAS technique. Black line is a hatch through gas field area, and A, B, C, and D are the feature points in the hatch. Red box indicates the area amplified in Figure 7. Red triangles represent the location of groundwater wells; black pentagrams represent the location where the water is injected.